Sash-lock.



No. 823,656. I

' PATENTED JUNE 19, 1906. y D. WILKIE. SASH LOOK. APPLIOATION FILED MAR.14,1906'.

3 SHEETS-SHEET 1.

44% 2am. WQ My No. 823,656. PATENTED JUNE 19, 1906.

D. WILKIE. SASH LOCK.

APPLICATION FILED MAR.14, 1905.

3 SHEETS-SHEET 2.

Ina anion By 5 a? Atty No. 823,656. PATENTED JUNE19,1906.

1). WILKIB.

SASH LOCK. APPLICATION FILED MAR. 14, 1005.

\ 3 SHEETS-SHEET 3.

In w/eni 0 7 DAVID W'ILKIIL GF BATTLE MlGH 'IGAN."

' Specification oijIgettersiEatent.

' Patented June 1-9 ,1eoe;

, B'eit: known that 11', DAVID W L1KJE;: zen: of; the United; States,, resid ng; at Battle- O eek n theeounty-ct Qalheun and Statect 5 Michigan;,thave intrentedcelttaint ew'and useful Improvements in; flShTLQQkSQ. and; 11 do: hereby declare the following to be a full, clear, and exactdescription; thereot, uch: as

will e able; thers; skil fid l a. the nt toi hicht it appentainst makeand use these-me.-

This:inventionz relates to; sash-locks and, among other thingan as for its object to; soconstruct a lock fot the. purpose; whereby a window may be; locked; either an; e evated OIT-1DWeI'Qd1pOSlt/iOIL, sogthati the same cannot b.edisturbed or-moved-from locked osition Without, having been; unlocked; again bythe; s of; a key designed; for the purpose. Qt especialv importance does 1 this,v applyto; sanigtObillmSyhOsp tlals, and; hotels and, fact, t any building Where; absolute. security is desired for theWind'oWs. Qftentimes whospital'.:=v a. certain degree of temper ture. s ie: sinedimaintained tine/vent of; Whicha window result.

My invention contemplates the use; of a I key-,vby'which means thewindow cannot be; again: releaseduntil acted upon again by the patient will: raise a window contrary to.- the willot the-nurse-ion attendantaandabecom un: duly exposed. Again,, it. has been: demon?- stratedthat suicide by jumping from a. win:- dow at algreat; eleinationiconld'have been pne- VG ll'IGdg by-properly securing: t e same.

Myinvention contemplates the use of: a; casing comprising two shells pivotallyjoined at; one end thereof; and provided with a sashlockifng dog, the casing-beingprovided with, a, key-locking mechanisrnifor secunmg; the same intact when: closed;

I They obj ects; and advantages of? invene tlOIl'WiHi hereinafter appearz, as set forth inithe.

Fig. iris aseotiontofthe racleban. Fig. 5f istaiv sectional plan View 0t the-rack-b ar Y and sash theshellsintact. with the key-locking bolt reversed to, disenr key toreleasethe sashck. Oftent mes: a."

following-specification; andl specifically pointnd. shows the method of. securi g the same bymeansotawccu te sunk screwi Eig- 6. is alongitudiilalisectionofthesashrloclcreleased; Fig. 7 is-a1p1anview from therack or bar. ot he sa hock nemovredifrom the iinclosing 1 casing. and-represents the: boltetop, remevedi "Fig; 8, represents the inclosing, case: pened and the seshe cck shown in; Fig. 7; removed, 111. lsoshows he key-locking mechenisrn.v Figa representsv a. ngitud nal secticn v and. shows the key-locking bolt engaged! within a: .slot, of; the inner Shelli 1; the mode ofysecuring the same toge her-i. Fig, 110, isa pe spective View of, the spring bolt-cover. 1L is: a fnont. e d.- v evt em s sect nv of the. sashe lock closed; and the key-locking bolt securing Fig; 12, is a View of Fig 1.1:

gage-the shel1.S,-. Fig; 1 3,is.a perspective View.

Lot the key-lock mechanism detached; from:

the outer shell,ofthesash-lock, Fig Levis a; perspective VJGW- of; the angle-plate. to, the ey-lock, 1 andiE-ig; 1:5,is a, perspective View of a-key for actuating thekey-lock. is: raised! or! lowered to facilitate the; desired;

Likemanks ofreferenee; refer, to come sponding parits throughout the several; views In the'drawings, A. and' 3 represent the- Window-sash, O thesash-lock,and D the rlaok 1 or bar to whichthedogand bolt ofthe sashi ock ngagefor ecuringavvindOW in; atfiXedposition.

The sash-T10 ckz-mechanismlin; the main 0.0m?

prisescvan outer casing or, shell,- atand an inner,

casing or shell, I), attack-gripping dog-0;, having jaws-m, a; spring-release ,rack-locking bo1t (La key-lock e, and th ackrbar D. 'Ehe'rack D2 comprisesv a metallic strip wedge-shaped in crossesection, astshown, the narrow sidQbetween the angles; abutting; against theiupp'en sash and'seoured thereto;by means-of screws g! countersunksomewhatbelow thefaceside thereof within the bottoms of; the apertures g g-therein, thelowerendot theraek terminate 'ing at theupper edge, of the lower-rail of the sash; andv placed closely to; the inner edge of I the. sash, 'as shown. The casing ;co1npri ses.

the partsc and? b, the part (thawing the top a?, one closed; end 0/7 againstwhi'ch; the key-- locln'ng. mechanism eis securedifromz the in-n side, andthe sides; CL ;ll&ZVl I Ig;IEOI1IIdBdiIYG&I' ex.-

tremiti'es through: which rivets h. h; pass, and

pivot; the inner shell I thereto. The: inner E shell I), is, an open-ended: rectangular channel and; has v its) sides, If. rounded: atone end,

closed the plunger-bolt (1 will through which the aforesaid rivets pass. Within the bottom I) of this shell apertures 11 and i are provided for securing the same to the upper edge of the lower sash B, the apertures i being elongated, so that when fitting the shell I) to the sash in relation to the rack D on the opposite sash the same can be placed and located exact before driving the remaining screws to a seat. This shell to one side at the rear end is provided with a slot 1,.

into which the key-bolt k of the key-lock e is made to engage, the outer shell having a hole Z, through which a key :10 may be introduced to turn the bolt 7c in said lock. (See Figs. 1, 6, 9, 11, and 12.)

Within the inner shell the sash-locking mechanism is placed. This mechanism comprises a dog 0 and a plunger-bolt d. The dog 0 has at one end thereof two beveled jaws m, the bevel of the jaws being coincident with and adapted to engage the locking-bar D when in a working position, hereinafter set forth. The jaws m are of a thickness approximately the depth of the shells a and 1) minus the thickness of a cap-piece it. Toward the rear of the dog 0 its material is cut away and forms a groove p transverse thereof, its rearward extremity terminating in an upwardly-and rearwardly beveled lug or rib p. Transverse of this rib a hole g bisects the same, and within the main body portion of the dog 0 and alined therewith a groove 9 is formed. Within this groove the body 8 of the plunger-bolt d slides, and at its opposite end a hole is formed between the jaws m, through which the forward end of the plunger-bolt d works. This bolt is formed with a stem about which a coil-spring 1' is placed, the latter of which operates within the groove g between the shoulder s of the bolt and the opposite end of the groove, as shown. Near the rear extremity the bolt is beveled at d downward and rearward and terminates in a semicircular shank t, through which a longitudinal slot u is made for the reception of a retaining-pin v. The terminatintg shank t passes through the hole g of the r1 p.

Occupying a position within the shell a and extending crosswise thereof a tapering rib w is provided. This rib is so located that when the two shells a, and b are swung together, as shown in Fig. 6, the rib w will occupy a position between the bevel d of the bolt (1 and the beveled side of the rib p, a means whereby when the aforesaid shells are completely be forced outward and the dog 0, having the jaws m, inward, a means whereby said jaws will draw against and grip the bevel sides of the rack d and draw the window-sash together, while the plunger-bolt (1 will be forced within an aperture 9 thereof, preventing vertical movement of the window-sash. The bevel of the rib 'w is of such pitch-where it engages the bevel of the transverse rib 19 that but a slight inward movement is imparted to the dog 0, having the jaws m, when the casing a is closed over the casing b. The dog 0, having the sloping rib p, is made to fit snugly within the inner shell I), so as to slide freely therein, the cap member n being secured to the upper side of the dog by screws or other means, the shoulder portion 8 of this bolt passing through a hole 17, in the depending flange n of the cap-piece n, as shown in Fig. 7. At either side of the aws m and extending backward of the rivets h a portion of the metal is cut away and leaves shoulders w. The object of these shoulders is to prevent the dog 0 from sliding from the casing, the aforesaid shoulders abutting rivets h when in a normal position.

In the key-locking mechanism a right-angular flange-plate m is secured by rivets or other means to the forward inner and upper end of the outer shell a. A downwardly-depending flange of this plate is provided with a key-socket m and two 0 positely-alined slots 00*, through which gui e-pins 7c of the plunger-bolt 7c are adapted to work, a coilspring P, Fig. 8, being secured at one end to one end of the flange-plate 00 the opposite end of the spring engaging one of the guidepins k to actuate the plunger-bolt is. The plunger-bolt has a central hole is, provided with one vertical side 1c op osite the extremity having the bevel 7c. he vertical side of this hole is in close proximity to the alined key-socket m and the keyhole Z of the outer shell a, and when the bit 3 of the key so is turned, as in Fig. 12, the same causes the plunger-bolt 7c to disengage the inner shell I) and unlock the casing. In closing the shell a, to which the key-lock e is secured over the shell I), the bevel 7c of the key-bolt 1c strikes the u per edge of the shell I) and throws said bolt ackward, and when the shells are in a closed position, as shown in Figs. 1, 2, 9, 11, and 12, the recoil of a spring k throws the bolt into a locked position with the inner shell I) by engaging a slot thereof and prevents the casing from unelosing until released by means of a key.

The 0 eration of my improved sash-lock will in t e main have been apparent from the foregoing description. The rack-b ar having been secured to the upper sash, as set forth, the shell 6, together with the lockingjaws m, is fitted to the sash B, the aforesaid jaws being placed astride of said bar D, whereby the shell I) is located preparatory to being screwed in place. The parts having been thus located, to secure a window in a position other than closed would be to unlock the key-lock e raise the shell (1, whereby the plunger-bolt d and the jaws m will retract from the rack D, thence elevate or lower a window the remaining distance, as may be desired, and again depress the shell a, wherel cated as to engage, one of the stood that t e plungenboltd is to beso=lov apertures 9 within the rackDi Having therefore described invent-ion,

' what I claim as new, and; desire to-ise'cu're by Letters Patent, is' j 1. A sash-lock comprising a casing having an innershell with a bottom and two sides, and an outer shell having a top, two sides and an end, the latter adaptedto inclose the former, the two being pivotally hinged at the rear end sides, the inner of said shells ada ted to be screwed to the top of a lower win owsash, a rack having apertures in its face side thereof, screwed near the lower end of an u per sash, a plunger-bolt operative within said casing adapted to engage the apertures within said rack, means for causing said plungerbolt to engage said rack when said casing is closed, and a lock to secure said casing when closed, substantially as, and for thepurpose set forth. o

2. A sash-lock comprising a casing having an inner shell with a bottom and two sides, and an outer shell having a top, two sides and an end, the latter adapted to inclose the former, the two being pivotally hinged-at the rear end sides, the inner of said shells being screwed to the top of a lower window-sash, a rack having apertures screwed near the lower end of an upper sash, a'dog having jaws slidably ada ted to engage said rack operative from witiiin said innershell, a plunger-bolt operative within said dog adapted to engage in the apertures within said rack, means for causing said dog and plunger-bolt to engage said rack when said casing is closed, and a lock to secure said casing when closed, sub stantially as, and for the purpose set forth.

3. A sash-lock comprising a casing having an inner shell with a bottom and two sides, and an outer shell having a top, two sides and an end, the latter adapted to inclose the former, the two being pivotally hinged at the rear end sides, the inner of said shells being ada ted to be secured to the top-of a lower window-sash, a rack having apertures screwed near the lower end of an upper sash, a dog having jaws slidably adapted to engage said rack operative from within said inner shell, a plungerebolt operativewithin said dog adaptedto engage said apertures, said plunger-bolt having a beveled shoulder, and said dog having an inwardly-beveled shoulder, means on said outer shell to engage the beveled surfaces of said plunger-bolt and dog, when closed, to cause said dog and plunger-bolt to engage said rack, and a lock to secure said casing when closed, substantially as, and for the purpose set ,forth.

4. A sash-lock comprising a casing having an inner shell With a bottom and two sides,

and. an outer'shell having. a, top two. sides:

and; an: end-,the;latter adapted to inclose-the former, the twoi-b eingpivotallyhinged at the rear. end sides, the inner; ofi' said shells being adapted to; be secured to i the top of a lowerwindow-sash, a wedge-shaped rackhaving apertures; secured to the-upper sash nearlt-he bottom thereof, a; dog having: doublejaws.

and; an inwardly-b eveled-rear, extremi t-y slid: ably adapted to engage said rack, a plungerbolt having a rearwardly-beveled extremity oerative within said 'dog between the jaws t ereof adapted to engage in said apertures, a tapering rib operative from the outer shell adapted to contact with the beveled extremities of said dog and plunger-bolt when the casing is closed and cause said dog and plunger-bolt to engage said rack, means to retract said plungerebolt, and a lock secured within the outer casing adapted to engage with the inner casing to secure the same when closed,

substantially as, and for the purpose set forth. a

5. Asash-lock com rising a casing having an inner shell with a ottom with two sides, and an outer shell having a top, two sides and an end, the latter adaptedto inclose the "former, thetwo being pivotally hinged at the rear end sides, the inner of said shells being secured to the top of a lower window-sash, a Y

wedge-shaped rack having apertures therein and adapted to be secured to an upper sash;

near the bottom thereof, a dog having double jaws and an inwardly-beveled rear extremity slidably adapted'to engage said rack, a plunger-bolt having a rearwardly-beveled rear extremity operative within said dog between the jaws thereof adapted to engage in said apertures, a tapering rib operative from said outer shell adapted toen age between the bevels of said lunger-bo t and dog when said casing is c osed, to cause said dog and plunger-bolt to engage said rack, means for retracting said plunger-bolt, means for limiting the travel of said dog, and a lock to retain said casing when closed, substantially as, and for the purpose set forth. v

6. A sash-lock comprising a casing having an inner shell with a bottom and two sides, and an outer shell having a top, two sides and an end, the latter adapted to inclose the former, the two being'pivotallyhinged at the rear end sides, the inner of said shells being adapted to be secured to the top of a lower window-sash, a wedge-shaped rack, having apertures screwed to the upper sash, terminating at the bottom thereof, a dog having jaws slidably adapted to engage said rack, a

plunger-bolt operative within said dog bespectively, When said casing is closed to cause the dog and plunger-bolt to engage said rack, means for retracting said plunger-bolt, the body of said dog slidably adapted to operate Within the inner casing, the pivots of said hinges projecting inwardly, shoulders formed on said dog adapted to abut against said pivots to limit its movement outward, and a v look within the outer end of the outer casing adapted to engage With the inner casing to 10 secure the same when closed, substantially as, and for the purpose set forth and described.

DAVID WILKIE.

Witnesses:

H. F. WINGATE, F. H. WINGATE. 

